U.S. patent application number 13/462436 was filed with the patent office on 2013-11-07 for heat dissipation structure for light bulb assembly.
The applicant listed for this patent is Chen-Chun LIEN. Invention is credited to Chen-Chun LIEN.
Application Number | 20130292106 13/462436 |
Document ID | / |
Family ID | 49511664 |
Filed Date | 2013-11-07 |
United States Patent
Application |
20130292106 |
Kind Code |
A1 |
LIEN; Chen-Chun |
November 7, 2013 |
HEAT DISSIPATION STRUCTURE FOR LIGHT BULB ASSEMBLY
Abstract
A heat dissipation structure for a light bulb assembly includes
a holder, a heat dissipating cover, and a light seat. The holder
includes a socket and a receiving space defined in the socket to
receive a circuit board, the socket includes a first abutting
portion formed on a peripheral side thereof and at least one first
coupling portion arranged on a lateral side thereof. The heat
dissipating cover includes a through hole for inserting the socket,
and at least one cooling fin arranged around an outer peripheral
side thereof. The light seat is used for installing a LED light,
which includes a second coupling portion connected with the at
least one first coupling portion, and a second abutting portion
retaining the heat dissipating cover with the first abutting
portion.
Inventors: |
LIEN; Chen-Chun; (New Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LIEN; Chen-Chun |
New Taipei City |
|
TW |
|
|
Family ID: |
49511664 |
Appl. No.: |
13/462436 |
Filed: |
May 2, 2012 |
Current U.S.
Class: |
165/185 |
Current CPC
Class: |
F21Y 2115/10 20160801;
F21K 9/23 20160801; F21V 29/773 20150115 |
Class at
Publication: |
165/185 |
International
Class: |
F28F 7/00 20060101
F28F007/00 |
Claims
1. A heat dissipation structure for a light bulb assembly
comprising: a holder including a socket and a receiving space
defined within the socket to receive a circuit board, the socket
including a first abutting portion formed on a peripheral side
thereof and at least one first coupling portion arranged on a
lateral side thereof; a heat dissipating cover including a through
hole for inserting the socket, a rim around the through hole to
abut against the first abutting portion, and at least one cooling
fin arranged around an outer peripheral side thereof; and a light
seat used for installing a LED light which is electrically
connected to the circuit board, the light seat including a second
coupling portion connected with the at least one first coupling
portion, and a second abutting portion retaining the heat
dissipating cover with the first abutting portion so that the
holder, the heat dissipating cover, and the light seat are
connected together.
2. The heat dissipation structure for the light bulb assembly of
claim 1, wherein the heat dissipating cover includes a heat
dispersing portion fitted on the socket and an aluminum plate
mounted on one end of the heat dispersing portion which corresponds
to the second abutting portion.
3. The heat dissipation structure for the light bulb assembly of
claim 2, wherein the light seat includes a first positioning
portion, and the aluminum plate includes a second positioning
portion positioning the first positioning portion.
4. The heat dissipation structure for the light bulb assembly of
claim 1, wherein further comprising a lampshade engaged with the
heat dissipating cover to receive the light seat.
5. The heat dissipation structure for the light bulb assembly of
claim 4, wherein the lampshade includes an orifice for the LED
light to extend outward therefrom.
6. The heat dissipation structure for the light bulb assembly of
claim 1, wherein the at least one first coupling portion is a
retaining recess, and the second coupling portion is a hook
retained with the retaining recess.
7. The heat dissipation structure for the light bulb assembly of
claim 1, wherein the holder includes a metal connector connected
with an external power source to supply a power to the circuit
board.
8. The heat dissipation structure for the light bulb assembly of
claim 1, wherein the LED light includes a first engaging portion,
and the light seat includes a second engaging portion engaging with
the first engaging portion.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a heat dissipation
structure for a bulb, and more particularly to a heat dissipation
structure for a light bulb assembly which is capable of assembling
the light bulb tightly without using screws.
BACKGROUND OF THE INVENTION
[0002] A conventional bulb emits light by ways of tungsten wires,
so it has a simple structure and is replaced easily. An
incandescent light bulb contains a spherical lampshade and a
connector disposed on a distal end of the lampshade, the connector
has threads to screw with a holder. When transmitting a power
source, the tungsten wires in the lampshade emit heat and light,
and the light penetrates the lampshade to make an illumination.
However, during an operation of the incandescent light bulb, a lot
of heat will generate, thus having a great power and energy
consumption and a short service life.
[0003] A light emitting diode (LED) is a solid light source used to
transform electricity energy into light energy, so it is made of
semiconductor materials in the epitaxial growth technology. The
light emitting diode (LED) has some features, such as a small size,
a low driving voltage, a quick reaction rate, a shake proof
function, a long service life, and environmental protection. With
technology development and improvement, a luminous efficiency of
the light emitting diode (LED) since 1960 is enhanced constantly to
exceed that of the incandescent light bulb (its efficiency is
around 10-20 lm/W) and that of a fluorescent lamp (its efficiency
is around 60-80 lm/W).
[0004] Because of a constant development of LED related technology,
the luminous efficiency of LED is expected to reach 100 lm in
recent years. Since the LED has become the most remarkable
spotlight in a new generation of solid light source, and electronic
elements are produced in thin and light-weight type, so the light
emitting diode (LED) will replace the incandescent light bulb to
become a widely used illumination device. Likewise, thanks to
signal lights, street lamps, home lighting, lights, and advertising
lights are used commonly, LED are a mainstream product in lighting
market.
[0005] Nevertheless, if the light emitting diode (LED) has more
power and larger brightness or its module generates larger heat,
its heat is difficult to dissipate. Therefore, the heat dissipation
is a technological bottleneck for the light emitting diode (LED). A
heat dissipation solution to the light is to provide a radiator to
dissipate heat in the air by contacting a surface of the radiator
with convection air. Therefore, the radiator with a large cooling
area has to be fixed in the light emitting diode (LED) with high
power and brightness so as to prevent form a light fade. But such a
light emitting diode (LED) has a large size that will occupy
space.
[0006] To overcome above-mentioned heat dissipation, a heat
dissipation structure for a LED light is disclosed in TW
Publication No. M343768. The heat dissipation structure contains a
positioning rib formed around a peripheral side of a hole of a
housing, and the positioning rib has an orifice, two sides of which
contact with a first coupling plate and a second coupling plate
individually. The first coupling plate is provided to fix a control
chip, and the second coupling plate is provided to position a LED
light, a heat conducting fluid or heat sink compounds are fed into
the orifice, and the two sides of the orifice are closed by the
first coupling plate and the second coupling plate respectively.
Thereby, a contacting area of heat dispersion is enhanced to
increase a heat dispersing effect.
[0007] However, the housing, the first coupling plate, and the
second coupling plate are connected together by ways of screws and
screw holes, so in the manufacture process, a step for forming the
screw holes has to be executed after a die sinking. Besides, a
crack of the housing will occur because of an improper force during
the screws are inserted to the screw holes.
[0008] The present invention has arisen to mitigate and/or obviate
the afore-described disadvantages.
SUMMARY OF THE INVENTION
[0009] The primary object of the present invention is to provide a
heat dissipation structure for a light bulb assembly in which each
component is only produced by ways of one-time die sinking to save
a process for forming screw holes.
[0010] To obtain the above objectives, a heat dissipation structure
for a light bulb assembly provided by the present invention
includes: a holder, a heat dissipating cover, and a light seat. The
holder includes a socket and a receiving space defined within the
socket to receive a circuit board, and the socket includes a first
abutting portion formed on a peripheral side thereof and at least
one first coupling portion arranged on a lateral thereof. The heat
dissipating cover includes a through hole for inserting the socket,
a rim around the trough hole abutting against the first abutting
portion, and at least one cooling fin arranged around an outer
peripheral side thereof. The light seat is used for installing a
LED light which is electrically connected to the circuit board. The
light seat includes a second coupling portion connected with the at
least one first coupling portion, and a second abutting portion
retaining the heat dissipating cover with the first abutting
portion. Thus, the holder, the heat dissipating cover, and the
light seat are connected together.
[0011] Further, the heat dissipating cover includes a heat
dispersing portion fitted on the socket and an aluminum plate
mounted on one end of the heat dispersing portion which corresponds
to the second abutting portion.
[0012] Further, the light seat includes a first positioning
portion, and the aluminum plate includes a second positioning
portion positioning the first positioning portion.
[0013] Further, the heat dissipation structure for the light bulb
assembly includes a lampshade engaged with the heat dissipating
cover to receive the light seat.
[0014] Further, the lampshade includes an orifice for the LED light
to extend outward therefrom.
[0015] Further, the at least one first coupling portion is a
retaining recess, and the second coupling portion is a hook
retained with the retaining recess.
[0016] Further, the holder includes a metal connector connected
with an external power source to supply a power to the circuit
board.
[0017] Further, the LED light includes a first engaging portion,
and the light seat includes a second engaging portion engaging with
the first engaging portion.
[0018] Thereby, the heat dissipating cover is fitted on the socket
of the holder, and the light seat is fixed on the socket so that
the heat dissipating cover are retained between the first abutting
portion of the socket and the second abutting portion of the light
seat. Thus, all components of the heat dissipation structure for
the light bulb assembly are connected together securely. Hence,
each component of the heat dissipation structure is only produced
by ways of one-time die sinking to save a process for forming screw
holes. On the other hand, a positioning process of screws and screw
holes is eliminated during manufacture, thus preventing from a
crack in the assembly.
[0019] The foregoing, as well as additional objects, features and
advantages of the invention will be more readily apparent from the
following detailed description, which proceeds with reference to
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020] FIG. 1 is a perspective view showing the exploded components
of a heat dissipation structure for a light bulb assembly according
to the present invention.
[0021] FIG. 2 is another perspective view showing the exploded
components of the heat dissipation structure for the light bulb
assembly according to the present invention.
[0022] FIG. 3 is a cross sectional view showing the assembly of the
exploded components of the heat dissipation structure for the light
bulb assembly according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] FIGS. 1 and 2 are a perspective view showing the exploded
components of a heat dissipation structure for a light bulb
assembly according to the present invention. As shown in FIGS. 1
and 2, the heat dissipation structure for the light bulb assembly
of the present invention comprises a holder 10, a heat dissipating
cover 20 fitted on an outer peripheral side of the holder 10, and a
light seat 30 connected to the holder 10. The holder 10 includes a
metal connector 13 (i.e., a main connector) electrically connected
thereon to obtain an external power, a socket 11 connected with the
metal connector 13, and a receiving space 12 defined in the socket
11 to receive a circuit board 14. One end of the socket 11 is
connected with the light seat 30, and the light seat 30 is used for
installing a LED light 40. The LED light 40 is electrically
connected to the circuit board 14. Thereby, the LED light 40 allows
to obtain an external power source processed by the circuit board
14.
[0024] The assembly of the heat dissipation structure for the light
bulb assembly of the present invention is described in details as
follows:
[0025] The socket 11 includes a first abutting portion 112 formed
on a peripheral side thereof adjacent to the metal connector 13 and
at least one first coupling portion 111 arranged on a lateral side
thereof. The heat dissipating cover 20 includes a through hole 21
for inserting the socket 11 and matching with a shape of the socket
11. As the heat dissipating cover 20 is connected to the socket 11,
the first abutting portion 112 of the socket 11 abuts against a rim
25 at one end of the heat dissipating cover 20 which is around the
through hole 21. The light seat 30 includes a second coupling
portion 32 connected with the at least one first coupling portion
111 and a second abutting portion 33 formed on the light seat 30 to
abut against an inner side of another end of the heat dissipating
cover 20 opposite to the first abutting portion 112.
[0026] Referring further to FIG. 3, the at least one first coupling
portion 111 of the socket 11 is a retaining recess, and the second
coupling portion 32 is a hook retained with the retaining recess.
The heat dissipating cover 20 includes a heat dispersing portion 23
fitted on the socket 11 and an aluminum plate 24 mounted on one end
of the heat dispersing portion 23 which corresponds to the second
abutting portion 33 of the light seat 30, the heat dispersing
portion 23 includes a slot 232 arranged thereon to receive the
aluminum plate 24. To permit an entry room forming when the second
coupling portion 32 and the at least one first coupling portion 111
are connected together, the heat dispersing portion 23 includes two
guiding notches 231 arranged on two inner sides of the through hole
21 to guide the second coupling portion 32 inward. In addition, the
aluminum plate 24 includes a second positioning portion 241 defined
thereon adjacent to an outer rim of one end of the light seat 30,
and the light seat 30 includes a first positioning portion 34
extending outward from the second abutting portion 33 to engage
with the second positioning portion 241. Thus, the light seat 30 is
fixed on the heat dissipating cover 20, and the light seat 30 and
the socket 11 do not move relative to the heat dissipating cover
20.
[0027] To increase a dissipating area of the heat dissipating cover
20, the heat dissipating cover 20 further includes a plurality of
cooling fins 22 arranged around an outer peripheral side thereof so
that the LED light 40 accelerates a heat dissipation through the
heat dissipating cover 20 to lower a temperature of the LED light
40. The heat dissipation structure for the light bulb assembly of
the present invention further comprises a lampshade 50 screwed with
the heat dissipating cover 20 to receive the light seat 30, and the
lampshade 50 includes an orifice 51 for the LED light 40 to extend
outward therefrom, an inner side of the lampshade 50 proximate to
the orifice 51 is biased against an upper surface of the LED light
40 so that the LED light 40 is fixed on the light seat 30. To avoid
a shake of the LED light 40 relative to the light seat 30, on the
other hand, the LED light 40 also includes a first engaging portion
41, and the light seat 30 includes a second engaging portion 31
corresponding to and engaging with the first engaging portion 41,
such that the LED light 40 is fixed on the light seat 30.
[0028] As illustrated in FIGS. 1-3, in which FIG. 3 is a cross
sectional view showing the assembly of the heat dissipation
structure for the light bulb assembly according to the present
invention. In the assembly, the socket 11 of the holder 10 is
secured in the heat dissipating cover 20 via the through hole 21 of
the heat dissipating cover 20, and the first abutting portion 112
of the socket 11 abutting one end of the heat dissipating cover 20.
The light seat 30 is connected with the at least one first coupling
portion 111 of the socket 11 via the second coupling portion 32,
during which the first abutting portion 112 of the socket 11 and a
second abutting portion 33 of the light seat 30 are guided to
contact with the second positioning portion 23 and the aluminum
plate 24 respectively so that the heat dissipating cover 20, the
light seat 30, and the holder 10 are connected together
tightly.
[0029] Thereby, the heat dissipating cover is fitted on the socket
of the holder, and the light seat is fixed on the socket so that
the heat dissipating cover are retained through the first abutting
portion of the socket and the second abutting portion of the light
seat so that all components of the heat dissipation structure for
the light bulb assembly are connected together securely. Hence,
each component of the heat dissipation structure is only produced
by ways of one-time die sinking to save a process for forming screw
holes. On the other hand, a positioning process of screws and screw
holes is eliminated during manufacture, thus preventing from a
crack in the assembly. Furthermore, the aluminum plate transmits
heat to the heat dispersing portion and provides an insulation
effect simultaneously.
[0030] While the preferred embodiments of the invention have been
set forth for the purpose of disclosure, modifications of the
disclosed embodiments of the invention as well as other embodiments
thereof may occur to those skilled in the art. Accordingly, the
appended claims are intended to cover all embodiments which do not
depart from the spirit and scope of the invention.
* * * * *